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Related Experiment Video

Updated: Mar 12, 2026

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Voltage-controlled accommodating IOL system using an ion polymer metal composite actuator.

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    This study introduces a new accommodating intraocular lens (IOL) using an ionic polymer metal composite (IPMC) actuator. The novel voltage-controlled IOL system can adjust focus, potentially eliminating the need for reading glasses after cataract surgery.

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    Area of Science:

    • Ophthalmology
    • Biomedical Engineering
    • Materials Science

    Background:

    • Cataract surgery replaces the natural lens with an intraocular lens (IOL).
    • Current IOLs often fail to restore natural focusing ability, necessitating reading glasses for near vision.
    • There is a need for advanced IOLs that can dynamically adjust focus.

    Purpose of the Study:

    • To develop and evaluate a novel voltage-controlled accommodating intraocular lens (IOL).
    • To utilize an ionic polymer metal composite (IPMC) actuator for dynamic lens focusing.
    • To assess the feasibility of restoring near vision accommodation after cataract surgery.

    Main Methods:

    • An in vitro experiment was designed to test the accommodating IOL system.
    • An IPMC actuator was integrated into an artificial eye model.
    • The actuator's movement, controlled by applied voltage, deformed an attached lens to change optical focus.

    Main Results:

    • The voltage-controlled IOL system demonstrated the ability to change focus.
    • An accommodation range of approximately 0.8 diopters was achieved.
    • The system operated effectively under an applied voltage of ± 1.3 V.

    Conclusions:

    • A novel accommodating IOL using IPMC actuator technology is feasible.
    • This technology shows potential for restoring accommodative function in patients post-cataract surgery.
    • Further development could lead to IOLs that eliminate the need for reading glasses.